Bolt-cutter



(No Model.)

0. s. HILL.

' BOLT CUTTER.

No. 543,649. Patented July 30, 1895.

piece 3.

\UNILTED STATES PATEN Denice.

CYRUS SUMNER HILL, OF ROCHESTER, NEW HAMPSHIRE.

BOLT-CUTTER.

SPECIFICATION forming part of Letters Patent No. 543,649, dated. July30, 189-5r Application filed August 7, 1894.

5'0 aZZ whom it may concern:

Be it known that I, CYRUS SUMNER HILL, a citizen of the United States,residing at Rochester, in the county of Strafford and State of NewHampshire, have invented a new and useful Bolt Clipper or Gutter, ofwhich the following is a specification.

This invention relates to bolt-clippers; and it has for its object toprovide a tool of this character that shall possess simple and efficientmeans for exerting a powerful cut on the bolt or rod operated upon,while at the same time being comparatively simple in construction andoperation.

With these and other objects in view, which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination, and arrangement of parts hereinaftermore fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a pair ofbolt-clippers constructed in accordance with this invention. Fig. 2 is acentral longitudinal sectional view thereof, showing the cutter-jawsopen. Fig. 3 is a detail in perspective of the sliding cutter-jaw. Fig.4 is a similar view of the stationary or fixed cutter-jaw.

Referring to the accompanying drawings, 1 designates a bifurcatedtool-head essentially comprising the parallel head-plates 2, connectedat one edge by the intermediate bridge- The said bifurcated tool-head 1has removably clamped therein between the plates 2 the stationary orfixed cutter-jaw 4. The said stationary or fixed cutter-jaw 4 is made ofa suitable length of cast-steel and is v rvwwting-edge 8 that isdisposed at an angle or inclination to the longitudinal center of thetool-head and mounted to slide on the stationary or fixed cutter-jaw 4between the same and the intermediate bridge-piece 3 of the tool-head isthe sliding cutter-jaw 9. The sliding cutter-jaw 9 is also made ofcast-steel and is provided at that end which works in Serial No.519,663. (No model.)

opposition to the blade 7 of the jaw 4 with the beveled cutter-blade 10that is reversely beveled to the blade 7, and is provided with aninclined cutting-edge 11 that is formed parallel with the cutting-edge 8of the stationary or fixed jaw, so that as the jaw 9 is slidback andforth it will be obvious that the relation of the cutting-edges 8 and 11will produce a draw-cut, which provide for the severance of a bolt orrod much more quicklyand with less injury to the tool than a direct cut.The sliding cutter-jaw 9 is maintained close against the stationary orfixed cutter-jaw and the wear thereof also compensated for by means ofthe steel washer-plate 12 that is interposed between one side of thesliding jaw and the intermediate bridge-piece 3 of the tool-head, and aset-screw 13 ismounted in a threaded opening 14 in said bridge-piece andimpinges on the washer-plate 12 to hold the same against the saidsliding jaw to take up the wear and also to hold the same steady, and ajam-nut 15 working on the screw 13 looks the same in its adjustedposition.

The sliding cutter-jaw 9 has projected from the inner end thereof thedouble rack-bar 16, with the teeth on both sides of which mesh thepinion segments 17 formed on the inner ends of the operating-levers 18.The said opcrating-levers 18 are removably and pivotally mounted withinthe tool-head 1 at their inner ends'on the pivot-bolts 19, and in theirpivoted ends the said levers are provided with the oil-holes 20 whichlead to the bolts 19, so

that the bearings of said levers may be lu- From the above the operationand advan- Y tages of the herein-described bolt-clippers will be readilyapparent to those skilled in the art, and it will be understood thatchanges in the form, proportion, and the minor details of constructionmay be resorted to without depart- TOO plates at one edge, a stationarycutter jaw fitted between the parallel plates of the tool head andprovided at one end with a beveled blade having an inclined cuttingedge, bolts removably fastening the stationary cutter jaw within .thetool head, a sliding cutter jaw mounted to slide on the stationarycutter jaw between the latter and the bridge piece of the tool head,said slidingjaw being provided at one end with an integral blade beveledreversely to the blade of the stationary jaw and having an inclinedcutting edge opposed to and parallel with the cutting edge of saidstationary jaw, means for taking up the wear of the sliding cutter jaw,and means for sliding astationary cutter jaw rem ovably held within Isaid headand provided at one end with a cutting blade, a sliding cutterjaw working within said head and provided at one end with a bladeopposed to that of the stationary jaw, a washer plate interposed betweenthe sliding jaw and one side of the tool head, a set screw mounted inthe tool head and working against said washer plate, and operatinglevers pivotally mounted at one end in said tool head and con nectedwith said sliding jaw, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto aitixedmy signature in the presence of two witnesses.

CYRUS SUMNER HILL. Witnesses:

EDGAR M. GATE, CHAS. W. BROWN.

